DataContractJsonSerializer.WriteObject Method (XmlDictionaryWriter, Object)
Assembly: System.ServiceModel.Web (in System.ServiceModel.Web.dll)
The type being serialized does not conform to data contract rules. For example, the DataContractAttribute attribute has not been applied to the type.
There is a problem with the instance being written.
The maximum number of objects to serialize has been exceeded. Check the MaxItemsInObjectGraph property.
Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.